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Model H USB Controller Upgrade (IBM Model M)

KEEBD Model H USB Controller Mechanical Keyboard

The KEEBD Model H USB Controller Upgrade is a replacement controller board designed for IBM Model M keyboards. It suits users who want to modernize their vintage Model M with native USB connectivity and programmable firmware, without altering the original keyboard matrix or case. This upgrade is aimed at hobbyists or enthusiasts comfortable with firmware customization and seeking a non-destructive way to add USB support.</p... Read more
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Compare KEEBD Model H USB Controller vs Keychron Q3 vs Keychron V3 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
KEEBD Model H USB ControllerKeychron Q3Keychron V3
Model H USB Controller Upgrade (IBM Model M)
97
Keychron Q3 QMK Custom Mechanical Keyboard
96
Keychron V3 QMK Custom Mechanical Keyboard ISO Layout Collection
0.0 (0)
4.7 (319)
2.4 (16)
  • Built with the ANSI layout standard
  • Supports Wired, Wired only connectivity
  • Offers No RGB lighting
  • Has Linear, Tactile, Clicky, Silent switch options
  • Built with the ANSI, ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK layout standard
  • Uses a Gasket Mount mounting style
  • Weighs about 2000 g
  • Sized at 20 x 137 x 365 mm
  • Made with a Aluminum case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Has Linear, Tactile, Clicky switch options
  • Built with the ISO, JIS, ANSI, ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW, ISO-CH layout standard
  • Features N-key rollover
  • Uses a Tray Mount mounting style
  • Weighs about 1360 g
  • Sized at 19 x 141 x 367 mm
  • Made with a Plastic, ABS case
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, White South-face RGB lighting
Scores
  • Performance: 39
  • Build Quality: 41.8
  • Productivity: 46.7
  • Customizability: 45.5
  • Portability: 40.3
Scores
  • Performance: 71.8
  • Build Quality: 91
  • Productivity: 97.4
  • Customizability: 99.5
  • Portability: 57.5
Scores
  • Performance: 91
  • Build Quality: 88.5
  • Productivity: 97.5
  • Customizability: 99.7
  • Portability: 57.6
Name
KEEBD Model H USB Controller
Name
Keychron Q3
Name
Keychron V3
Release year
2022
Release year
2022
Release year
2022
Switch Options
-
Switch Options
Linear, Tactile, Clicky, Silent
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
Unknown
Layout Size
80%
Layout Size
80%
Layout Standard
ANSI
Layout Standard
ANSI, ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK
Layout Standard
ISO, JIS, ANSI, ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW, ISO-CH
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Wired, Wired only,
Connection
Wired, Wired only,
Polling Rate
-
Polling Rate
1000 Hz
Polling Rate
1000 Hz;8000 Hz
Battery capacity
-
Battery capacity
-
Battery capacity
-
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Gasket Mount
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb, South-face, White, White South-face
Case Colors
Case Colors
Case Colors
Case Material
-
Case Material
Aluminum
Case Material
Plastic, ABS
Keycaps Material
-
Keycaps Material
PBT, ABS
Keycaps Material
ABS, PBT
Dimensions
-
Dimensions
20 x 137 x 365 mm
Dimensions
19 x 141 x 367 mm
Weight
-
Weight
2000g
Weight
1360g
*Something incorrect or missing? Please
let me know
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Product Description

The KEEBD Model H USB Controller Upgrade is a replacement controller board designed for IBM Model M keyboards. It suits users who want to modernize their vintage Model M with native USB connectivity and programmable firmware, without altering the original keyboard matrix or case. This upgrade is aimed at hobbyists or enthusiasts comfortable with firmware customization and seeking a non-destructive way to add USB support.

Key Features

  • Replaces the original internal controller with a USB-enabled board, allowing direct connection to modern computers without adapters.
  • Supports full key remapping through QMK firmware, enabling customization of layouts and functions.
  • Includes a DFU-style bootloader for easy firmware updates via USB.
  • Uses genuine TE Connectivity Trio-mate connectors, preserving compatibility with the original keyboard matrix.
  • Lower power consumption compared to the original controller, which may benefit longevity and efficiency.

Compatibility

  • Works with both variants of the IBM Model M Model H internal connectors.
  • Does not require the original controller board to function.
  • Firmware is open source and based on QMK, supporting a wide range of operating systems that support USB keyboards.

Trade-offs

  • Installation requires opening the keyboard and swapping the internal controller, which may be challenging for some users.
  • Typing feel and acoustics remain those of the original Model M, as this is only a controller upgrade.
  • Unknown if any latency differences exist compared to the original controller.
  • Does not add wireless connectivity or additional features beyond USB and programmability.

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